TREA

Takao Ninomiya

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  • Ibaraki, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Novolak resin for positive photoresist
    • Patent number 4,812,551
    • Issue date Mar 14, 1989
    • Sumitomo Chemical Company, Limited
    • Fumio Oi
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...